Symantec LiveUpdate is a useful antivirus update tool that will protect your computer against the latest viruses. LiveUpdate is the Symantec technology that permits an installed Symantec product to connect to a Symantec server over the Internet to check for program and other updates such as virus definitions and URL lists. When updates are available, it downloads them to your computer and installs them, keeping your Symantec software up to date. All updates that are downloaded are checked for a valid digital signature. Try the new LiveUpdate for all the Symantec Products you own!